Check the release notes for the first beta for highlights of OpenNebula 4.4 Retina functionality organised by component (a detailed list of changes can be found here).

Moreover, find in the release notes for the second beta for a list of features and bugfixes in the last release.

This release candidate includes many bug fixes, and stabilizes the OpenNebula 4.4 Retina code base. The following list contains the features and bugs worked on in this RC release:

• Feature #538: Multiple boot devices for VMs
• Feature #1770: Image decompress and their size reported in OpenNebula
• Feature #2092: Allow mixed templates for cloudbursting
• Feature #2148: Add documentation for –file in onevm disk/nic attach
• Feature #2345: Tagged VLAN (trunk) support for VM guests
• Feature #2384: Add user feadback when VM is not scheduled due to ”Not enough capacity”
• Feature #2435: Add more information to Hybrid VMs (EC2)
• Feature #2479: Allow CONTEXT/DEV_PREFIX, and make 'hd' the default prefix for cdrom type disks
• Feature #2464: Retry file deletion in common tm files
• Feature #2470: Add zombie VM count to VM list output
• Bug #1264: Do not allow wrong number in GRAPHICS/PORT
• Bug #2273: Add missing POWEROFF state in RESUME “from” parameter
• Bug #2308: Fix client browser cache issues in Sunstone when updating the server
• Bug #2345: Tagged VLAN (trunk) support for VM guests
• Bug #2437: Apply order parameter to all the data tables
• Bug #2426: handle sparse images in tm ssh mv (tar)
• Bug #2436: Changing the default order table value in the settings dialog now changes the order in the tables
• Bug #2432: Template editing wizard improvements
• Bug #2462: force context iso link creation
• Bug #2464: do tm delete retry in the host
• Bug #2463: search for IPv4 address in client collectd
• Bug #2467: fix for live migration in xen4
• Bug #2478: ds_id must be an integer in the deploy action
• Bug #2480: Use default values for enforce and ds_id if nil

Several improvements have been made to the cloud bursting model, including better scheduler support, better storage management (ie, prolog and epilog bypassing when cloud bursting) and improved AWS EC2 functionality support (broader monitorization, drop CLI for Ruby SDK, etc).

To upgrade, follow the standard upgrade procedure described in the documentation.

For a complete set of changes to migrate from a 4.2 installation please refer to the Compatibility Guide. To upgrade, follow the standard upgrade procedure described in the documentation.

OpenNebula is released under the Apache 2.0 open source license. The complete source tree and binary packages for OpenNebula can be downloaded here.

Packages are available for various distros: Ubuntu LTS and latest, CentOS, OpenSUSE and Debian.

Please report any bug or send feedback at the development portal or at the mailing list.

The documentation of OpenNebula 4.4 can be found here.

Find here the list of known issues in the Release Candidate, to be corrected for the final release.

The OpenNebula project would like to thank the community members and users who have contributed to this software release by being active with the discussions, answering user questions, or providing patches for bugfixes, features and documentation.

More information about the project can be found at the project web page. You may be also interested in checking the OpenNebula Addons Catalog that includes many interesting projects contributed by the community to enhance or add new features to OpenNebula.